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@article{MM2_1976__18_154381, author = {Klaus-J\"urgen Eckardt}, title = {On the {Existence} of {Wave} {Operators} for {The} {Klein-Gordon} {Equation.}}, journal = {Manuscripta mathematica}, pages = {43--56}, publisher = {mathdoc}, volume = {18}, year = {1976}, zbl = {0316.35073}, url = {http://geodesic.mathdoc.fr/item/MM2_1976__18_154381/} }
Klaus-Jürgen Eckardt. On the Existence of Wave Operators for The Klein-Gordon Equation.. Manuscripta mathematica, Tome 18 (1976), pp. 43-56. http://geodesic.mathdoc.fr/item/MM2_1976__18_154381/